2010 JEEP GRAND CHEROKEE ECU

WARNING!
Unintended movement of a vehicle could injure
those in and near the vehicle. As with all vehicles,
you should never exit a vehicle while the engine is
running. Before exiting a vehicle, you should apply
the park brake, shift the transmission into PARK,
and remove the key fob from the ignition switch.
Once the key fob is removed from the ignition
switch, the shift lever is locked in the PARK position,
securing the vehicle against unwanted movement.
Furthermore, you should never leave children unat-
tended inside a vehicle.
REVERSE
This range is for moving the vehicle backward. Use only
after the vehicle has come to a complete stop.
NEUTRAL
This range is used when vehicle is standing for pro-
longed periods with engine running. Engine may be
started in this range. Set the parking brake if you must
leave the vehicle.
DRIVE
This range should only be selected when the vehicle is at
a complete stop and the brakes are firmly applied. The
transmission automatically upshifts through fifth gear.
The DRIVE position provides optimum driving charac-
teristics under all normal operating conditions. For addi-
tional shifting information, refer to “AutoStick”in
“Starting and Operating” for further information.
Rocking the Vehicle
If the vehicle becomes stuck in snow, sand, or mud, it can
often be moved by a rocking motion. Move the shift lever
between DRIVE and REVERSE, while applying slight
pressure to the accelerator.
244 STARTING AND OPERATING

Towing Requirements
To promote proper break-in of your new vehicle drive-
train components the following guidelines are recom-
mended:
CAUTION!
•Do not tow a trailer at all during the first 500 miles
(805 km) the new vehicle is driven. The engine,
axle or other parts could be damaged.
•Then, during the first 500 miles (805 km) that a
trailer is towed, do not drive over 50 mph
(80 km/h) and do not make starts at full throttle.
This helps the engine and other parts of the
vehicle wear in at the heavier loads.
WARNING!
Improper towing can lead to an injury accident.
Follow these guidelines to make your trailer towing
as safe as possible:
•Make certain that the load is secured in the trailer
and will not shift during travel. When trailering
cargo that is not fully secured, dynamic load shifts
can occur that may be difficult for the driver to
control. You could lose control of your vehicle and
have an accident.
•When hauling cargo or towing a trailer, do not
overload your vehicle or trailer. Overloading can
cause a loss of control, poor performance or dam-
age to brakes, axle, engine, transmission, steering,
suspension, chassis structure or tires.(Continued)
5
STARTING AND OPERATING 295

WARNING! (Continued)
•To avoid contamination from foreign matter or
moisture, use only new brake fluid or fluid that
has been in a tightly closed container. Keep the
master cylinder reservoir cap secured at all times.
Brake fluid in a open container absorbs moisture
from the air resulting in a lower boiling point.
This may cause it to boil unexpectedly during hard
or prolonged braking, resulting in sudden brake
failure. This could result in a accident.
•Overfilling the brake fluid reservoir can result in
spilling brake fluid on hot engine parts, causing
the brake fluid to catch fire. Brake fluid can also
damage painted and vinyl surfaces, care should be
taken to avoid its contact with these surfaces.(Continued)
WARNING! (Continued)
•Do not allow petroleum based fluid to contami-
nate the brake fluid. Brake seal components could
be damaged, causing partial or complete brake
failure. This could result in an accident.
Automatic Transmission
Fluid Level Check
Regular automatic transmission fluid level checks are not
required. For this reason the dipstick is omitted.
If you notice fluid loss or transmission slippage or
malfunction, have your authorized dealer check the
transmission fluid level.
7
MAINTAINING YOUR VEHICLE 335

Center High-Mounted Stop Lamp (CHMSL)
1. Remove the two screws securing the CHMSL.2. Twist the bulb socket to remove from the CHMSL
housing.
3. Pull the bulb out of the socket.
4. Replace the bulb, reinstall the socket and reattach the
CHMSL.
354 MAINTAINING YOUR VEHICLE

ABS (Anti-Lock Brake System)............159,252
Adding Engine Coolant (Antifreeze) .......... 330
Adding Fuel ........................... 287
Additives, Fuel ......................... 285
Adjustable Pedals ........................ 114
Air Conditioner Maintenance ............... 322
Air Conditioning, Operating Tips ............ 232
Air Conditioning Refrigerant ............... 323
Air Pressure, Tires ....................... 274
Airbag .............................. 45,54
Airbag Deployment ....................... 55
Airbag Light ................... 46,53,58,73,159
Airbag Maintenance ....................... 57
Airbag, Side .......................... 51,54
Airbag, Window (Side Curtain) ...........48,51,54
Alarm, Panic ............................ 22
Alarm (Security Alarm) .................17,159
Alterations/Modifications, Vehicle ............. 8
Antenna, Satellite Radio ................... 216 Antifreeze (Engine Coolant)
..............329,355
Disposal ............................ 332
Anti-Lock Brake System (ABS) ............252,255
Anti-Lock Warning Light .................. 159
Anti-Theft System ....................... 159
Appearance Care ........................ 336
Arming Theft System (Security Alarm) ......... 17
Auto Down Power Windows ................ 30
Automatic Dimming Mirror ................. 80
Automatic Door Locks ..................... 28
Automatic Headlights .................... 101
Automatic Temperature Control (ATC) ......... 225
Automatic Transmission ................242,335
Fluid Level Check ..................... 335
Autostick ............................. 245
Auxiliary Electrical Outlet (Power Outlet) ...... 137
Auxiliary Power Outlet ................... 137
Battery ............................... 322
388 INDEX

Bulb Replacement...................... 349
Cargo .............................. 143
Center Mounted Stop ................... 354
Cruise .............................. 164
Daytime Running ...................... 103
Dimmer Switch, Headlight .............100,106
Electronic Stability Program (ESP)
Indicator ....................... 160,163,260
Electronic Throttle Control Warning ......... 165
Exterior .............................. 73
Fog .......................... 105,165,352
Fuses ............................... 341
Hazard Warning Flasher ................. 302
Headlight Switch ...................... 100
Headlights ........................ 349,350
Headlights On With Wipers ............... 101
High Beam Indicator .................... 157
Illuminated Entry ....................... 18
Instrument Cluster ..................... 100 Interior
............................. 107
Lights On Reminder .................... 104
Low Fuel ............................ 166
Malfunction Indicator (Check Engine) ........ 158
Map Reading ......................... 108
Oil Pressure .......................... 160
Passing ............................. 106
Reading .......................... 108,127
Rear Servicing ........................ 352
Rear Tail ............................ 352
Seat Belt Reminder ..................... 164
Security Alarm (Theft Alarm) .............. 159
Service ............................. 349
Service Engine Soon (Malfunction Indicator) . . . 158
Side Marker .......................... 352
SmartBeams .......................... 102
Tire Pressure Monitoring (TPMS) ........... 160
Traction Control .................... 160,260
Turn Signal ................ 73,100,106,351,352
396 INDEX

Maintenance......................... 340
Pretensioners .......................... 43
Reminder ............................ 164
Shoulder Belt Anchorage ................. 41
Seats ................................. 83
Adjustment ........................... 84
Cleaning ............................ 339
Easy Entry ............................ 97
Head Restraints ........................ 87
Heated ............................ 88,90
Lumbar Support ....................... 85
Memory ............................. 94
Power ............................. 85,86
Rear Folding .......................... 91
Reclining ............................. 84
Security Against Theft ..................... 17
Security Alarm (Theft Alarm) .............17,159
Selection of Coolant (Antifreeze) ............. 329
Selection of Oil ......................... 319 Sentry Key (Immobilizer)
................... 15
Sentry Key Programming ................... 16
Sentry Key Replacement ................... 16
Service Assistance ....................... 379
Service Contract ......................... 381
Service Engine Soon Light
(Malfunction Indicator) .................... 158
Service Manuals ........................ 383
Setting the Clock ................ 185,187,190,199
Settings, Personal ........................ 179
Shift Lock Manual Override ................ 241
Shifting ............................... 240
Automatic Transmission ................. 240
Shoulder Belts ........................... 36
Signals, Turn ................. 73,106,157,351,352
SmartBeams ........................... 102
Sound System Kicker .............................. 220
Speed Control (Cruise Control) .............. 116
10
INDEX 401